Combining archival footage with rotoscopic animation, Tower reveals the action-packed untold stories of the witnesses, heroes and survivors of America's first mass school shooting, when the worst in one man brought out the best in so many others.

• Independent Lens
• Go-Valley
• Monty Muir
• Violett Beane
• Cole Bee Wilson
• Aldo Ordoñez
• Blair Jackson
• Vicky Illk
• Chris Doubek
• Seamus Bolivar-Ochoa